srclist overlap message for exposure 2 of trigger 1148770
uvot_overlap.pl vrs. 2010-12-20b fem started at 230113d00h49m14s038509usUT
The observation of trigger 1148770 started 2023-01-13T00:42:59.4
Examining file 1148770_g909_uvot_sky_srclist.fits
The exposure ID is 695263379
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (299.5160,35.1076) with a roll angle of 185.8
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (299.5120,35.0750) with a radius of 3.000 arc min
This is 1.967 arc min from the center of the uvot region
The area of the BAT error circle is 28.27 sq. arc min
The UVOT/BAT overlap is 28.27 sq. arc min or 1.00 of the BAT error circle
Could not find the location of an XRT error circle
srclist afterglow message for exposure 2 of trigger 1148770
find_uvot_ag.pl vrs. 2020-10-30 fem started at 230113d00h49m14s990446usUT
Observation start time is 2023-01-13T00:42:59.4
Examining file 1148770_g909_uvot_catalog_srclist.fits
The exposure ID is 695263379
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 1148770_g909
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
Dimmest detected source in 1148770_g909 has mag 18.93
Aspect correction adds -0.00018 degrees (-0.042 sec of time = -0.52 arc sec) to RA
Aspect correction adds 0.00062 degrees ( 2.23 arcsec) to Dec
Total aspect correction is 2.29 arcsec
Star catalogs centered at 299.5302 , 35.1213 with radius 9.56 arc min.
n_usno: 3840 n_gsc: 0
*** WARNING -- bright star catalog has 13 entries brighter than 12 mag
The brightest has mag 8.83614
RA DEC Mag Color
bright star 0: 299.44580 (19:57:46.99) 35.13369 (+35:08:01.3) 11.28 USNO-V
bright star 1: 299.62599 (19:58:30.24) 35.16512 (+35:09:54.4) 11.43 USNO-V
bright star 2: 299.62747 (19:58:30.59) 35.07159 (+35:04:17.7) 11.84 USNO-V
bright star 3: 299.59032 (19:58:21.68) 35.20161 (+35:12:05.8) 8.92 USNO-V
bright star 4: 299.45137 (19:57:48.33) 35.03563 (+35:02:08.3) 9.94 USNO-V
bright star 5: 299.59017 (19:58:21.64) 35.21686 (+35:13:00.7) 10.03 USNO-V
bright star 6: 299.43647 (19:57:44.75) 35.20876 (+35:12:31.5) 10.88 USNO-V
bright star 7: 299.65356 (19:58:36.85) 35.05790 (+35:03:28.5) 11.62 USNO-V
bright star 8: 299.66151 (19:58:38.76) 35.06923 (+35:04:09.2) 8.84 USNO-V
bright star 9: 299.37253 (19:57:29.41) 35.06476 (+35:03:53.1) 11.19 USNO-V
bright star 10: 299.68381 (19:58:44.11) 35.03669 (+35:02:12.1) 11.38 USNO-V
bright star 11: 299.71711 (19:58:52.11) 35.10518 (+35:06:18.7) 9.55 USNO-V
bright star 12: 299.47623 (19:57:54.30) 34.97052 (+34:58:13.9) 11.40 USNO-V
Mean distance difference (CAT_DELTA) for 178 matched entries is 0.722" for 1148770_g909
Mean and std. dev of mag. difference (MAG_DELTA) are 1.843 and 0.524 for 1148770_g909
Found 15 entries without IDs and 1 entries that are acceptable afterglow candidates for 1148770_g909.
Acceptable entries have no ID, XRT distances < 10", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
11 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=299.5120 (19:58:02.88) DEC=35.0750 (+35:04:30.0)
XRT distances are as reported in catalog file.
-----------------
Entry 94 in the list of sources is a candidate afterglow for 1148770_g909 with 1x1 stamp
ra=299.48246 (19:57:55.79) dec=35.10991 (+35:06:35.7) +/- 1.1" mag=18.05+/-0.35
dist=459.9 REFID=124
*** The position of this source is inconsistent with the XRT position.
The position is 152.8 arc sec from the BAT position.
src: 94 distr. of nearby unmatched sources: 0 0 0 0 0
Found 5 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 arc sec of a source list entry are considered a match)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
299.4830 35.1133 12.5 -1 USNO-B1 99.99 19.09 99.99
299.4824 35.1087 4.2 -1 USNO-B1 99.99 14.02 99.99
299.4821 35.1089 3.8 -1 USNO-B1 15.67 14.31 14.92 *
299.4781 35.1134 18.1 -1 USNO-B1 99.99 18.77 99.99
299.4789 35.1068 15.2 -1 USNO-B1 19.57 17.34 18.33
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
List UVOT sources within 10" of the XRT position:
There are no candidates inside BAT error circle, but outside XRT error circle.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 10",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 2 of trigger 1148770
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no image afterglow info
SRCLIST PROBLEM: overlap is unknown
See notes for more details.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB230113 (Swift/BAT trigger 1148770) at 00:27:49 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 879 seconds after the BAT trigger. No credible afterglow
candidate has been found in the initial data products. Data from the 2.7'x2.7'
sub-image are not available at this time. The overlap of the 8'x8' region for
the list of sources generated on-board and the XRT error circle is uncertain.
No correction has been made for the large, but uncertain, extinction expected.
------- notes for trigger 1148770 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 230113d00h49m22s590426usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1148770
-expid=695263379 -msg_srclist
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/1148770/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position.
*** Warning -- no exposure found, using srclist assumed value.
XRT position found for srclist. BAT position found.
UVOT exposure began at MET 695263379.41806 or about 2023:013:00:42:54 UT
Found 3836 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 29% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 15 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
The closest srclist source has ra= 299.5726 dec= 35.1943 mag=17.57 sep=62.13".
All AG candidates sorted by magnitude for the current finding chart.
(U/V/White SRCLIST mags < 17.5/17.5/18.5 are reliable. Mag > 18.5/18.5/19.5 are
not. Others are uncertain.)
(U/V/White Genie image mags < 18.0/18.0/19.0 are reliable. Mag > 19.0/19.0/20.0
are not. Others are uncertain.)
(Magnitudes followed by * have been corrected for exposure.)
---MET--- -dt- filter ---RA-- ---DEC--- -MAG/Limit Dist(") Source Asp.Corr?
695263379 878 WHITE srclist found no candidates.
695263379 878 ? image data are not available.
List afterglow candidates for other finding charts.
695263070 569 ? srclist data are not available.
695263070 569 WHITE image found no candidates.
------- Tokens for Quick GCN -------